Convert gigameter to chain (US survey)
Please provide values below to convert gigameter [Gm] to chain (US survey) [ch (US)], or Convert chain (US survey) to gigameter.
How to Convert Gigameter to Chain (Us Survey)
1 Gm = 49709595.9595477 ch (US)
Example: convert 15 Gm to ch (US):
15 Gm = 15 × 49709595.9595477 ch (US) = 745643939.393215 ch (US)
Gigameter to Chain (Us Survey) Conversion Table
| gigameter | chain (US survey) |
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Gigameter
A gigameter is a unit of length in the metric system equal to 10^9 meters.
History/Origin
The prefix "giga-" for 10^9 was adopted by the CGPM (General Conference on Weights and Measures) in 1960.
Current Use
The gigameter is used for measuring interplanetary distances, for example, the distance between Earth and Mars.
Chain (Us Survey)
A U.S. survey chain is a unit of length equal to 66 U.S. survey feet.
History/Origin
The U.S. survey chain is based on the U.S. survey foot, which was slightly different from the international foot. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey chain was used for land surveying in the United States.